Merge pull request #53 from wagnert/0.5.8-beta

Refactoring PBC integration
ISSUE-34, ISSUE-36, added logging for system events, changed error_log statements to system logger output
Merge pull request #54 from Tominator87/0.5.8-beta

ISSUE-34, ISSUE-36, added logging for system events, changed error_log s...
Merge pull request #8 from techdivision/0.5.8-beta

Remerge with torminator